JP2017151458A5

JP2017151458A5 -

Info

Publication number: JP2017151458A5
Application number: JP2017079473A
Authority: JP
Filing date: 2017-04-13
Publication date: 2018-01-25
Anticipated expiration: 2033-05-31

Description

［１］本発明に係る撮像装置は、ズームレンズとフォーカスレンズとを有する光学系による像を合焦させる前記フォーカスレンズの合焦位置を検出する検出部と、前記検出部により前記合焦位置を検出する、前記光学系の像面における位置を選択する選択部と、を備え、前記検出部は、前記光学系の像面において前記光学系の光軸を含む第１領域以外の第２領域に含まれる位置が前記選択部により選択されている場合に、前記ズームレンズが移動すると、前記第１領域に含まれる位置に合焦する前記合焦位置を検出する。
［２］上記撮像装置に係る発明において、前記検出部は、前記第２領域に含まれる位置が選択されている場合に前記ズームレンズが移動すると、前記合焦位置を検出する位置を前記第１領域に含まれる位置に設定して前記合焦位置を検出することができる。
［３］上記撮像装置に係る発明において、前記検出部は、前記ズームレンズが停止すると、前記合焦位置を検出する位置を前記第２領域に含まれる位置に設定して前記合焦位置を検出することができる。
［４］上記撮像装置に係る発明において、前記検出部は、前記ズームレンズが停止すると、前記ズームレンズが移動する前に前記第２領域に含まれる位置にいた被写体に近い被写体に合焦する前記合焦位置を検出することができる。
［５］上記撮像装置に係る発明において、前記検出部は、前記第１領域に含まれる位置が前記選択部により選択されている場合、前記第１領域に含まれる位置に合焦する前記合焦位置を検出することができる。
［６］上記撮像装置に係る発明において、前記検出部は、前記光学系の像面の位置が、前記選択部により選択された位置における前記光学系の焦点深度の３倍の範囲内となる像面の位置に合焦する前記合焦位置を検出することができる。
［７］上記撮像装置に係る発明において、前記検出部は、前記選択部により選択された位置との前記光学系の像面のずれ量が、前記光学系の焦点深度の３倍の範囲内となる像面の位置に合焦する前記合焦位置を検出することができる。
［８］上記撮像装置に係る発明において、前記検出部は、前記光学系の像面において前記光学系の光軸の位置に合焦する前記合焦位置を検出することができる。
［９］上記撮像装置に係る発明において、前記検出部は、前記選択部により選択された前記第２領域に含まれる位置に近い前記第１領域に含まれる位置に合焦する前記合焦位置を検出することができる。
［１０］上記撮像装置に係る発明において、前記検出部は、前記フォーカスレンズの位置と前記合焦位置とのずれ量を検出することができる。
［１１］上記撮像装置に係る発明において、前記光学系による像を撮像して信号を出力する撮像部を備え、前記検出部は前記撮像部から出力された信号に基づいて、前記光学系による像が前記撮像部に合焦する合焦位置を検出することができる。
［１２］上記撮像装置に係る発明において、前記検出部で検出された前記合焦位置に前記フォーカスレンズの位置を制御する制御部を備えることができる。
［１３］上記撮像装置に係る発明において、前記制御部は、前記検出部により前記合焦位置が検出されない場合、前記ズームレンズと前記フォーカスレンズとの位置関係に基づいて、前記フォーカスレンズの位置を制御することができる。
［１４］上記撮像装置に係る発明において、前記制御部は、前記検出部により前記合焦位置が検出されない場合、前記ズームレンズの移動量に基づいて、前記フォーカスレンズの位置を制御することができる。 [1] An imaging apparatus according to the present invention includes a detection unit that detects an in-focus position of the focus lens that focuses an image by an optical system having a zoom lens and a focus lens, and the in-focus position is determined by the detection unit. And a selection unit that selects a position on the image plane of the optical system to detect, the detection unit in a second region other than the first region including the optical axis of the optical system on the image plane of the optical system. When the included position is selected by the selection unit, when the zoom lens moves, the in-focus position that focuses on the position included in the first region is detected.
[2] In the invention related to the imaging apparatus, the detection unit may detect a position at which the in-focus position is detected when the zoom lens moves when a position included in the second region is selected. The in-focus position can be detected by setting to a position included in the region.
[3] In the invention relating to the imaging apparatus, when the zoom lens is stopped, the detection unit detects the in-focus position by setting a position for detecting the in-focus position to a position included in the second region. can do.
[4] In the invention related to the imaging apparatus, when the zoom lens stops, the detection unit focuses on a subject close to a subject located at a position included in the second area before the zoom lens moves. The in-focus position can be detected.
[5] In the invention relating to the imaging apparatus, the detection unit may focus on a position included in the first region when a position included in the first region is selected by the selection unit. The position can be detected.
[6] In the invention related to the imaging apparatus, the detection unit may be an image in which the position of the image plane of the optical system is within a range that is three times the depth of focus of the optical system at the position selected by the selection unit. The in-focus position that focuses on the position of the surface can be detected.
[7] In the invention related to the imaging apparatus, the detection unit may be configured such that the amount of deviation of the image plane of the optical system from the position selected by the selection unit is within a range of three times the focal depth of the optical system. It is possible to detect the in-focus position that focuses on the position of the image plane.
[8] In the invention related to the imaging apparatus, the detection unit can detect the in-focus position at which the optical axis of the optical system is focused on the image plane of the optical system.
[9] In the invention relating to the imaging apparatus, the detection unit may determine the in-focus position that focuses on a position included in the first region that is close to a position included in the second region selected by the selection unit. Can be detected.
[10] In the invention related to the imaging apparatus, the detection unit can detect a shift amount between the position of the focus lens and the in-focus position.
[11] In the invention according to the imaging apparatus, the imaging unit includes an imaging unit that captures an image by the optical system and outputs a signal, and the detection unit performs an image by the optical system based on a signal output from the imaging unit. It is possible to detect a focus position at which the imaging unit is focused.
[12] In the invention relating to the imaging apparatus, a control unit that controls the position of the focus lens at the in-focus position detected by the detection unit may be provided.
[13] In the invention related to the imaging apparatus, the control unit determines the position of the focus lens based on a positional relationship between the zoom lens and the focus lens when the focus position is not detected by the detection unit. Can be controlled.
[14] In the invention related to the imaging apparatus, the control unit can control the position of the focus lens based on the movement amount of the zoom lens when the focus position is not detected by the detection unit. .

Claims

A detection unit for detecting an in-focus position of the focus lens for focusing an image by an optical system having a zoom lens and a focus lens;
A selection unit that detects the in-focus position by the detection unit, and selects a position on the image plane of the optical system;
The detection unit is configured to move the zoom lens when a position included in a second region other than the first region including the optical axis of the optical system is selected by the selection unit on the image plane of the optical system. An imaging device that detects the in-focus position that focuses on a position included in the first region .

The imaging device according to claim 1,
When the zoom lens moves when the position included in the second area is selected, the detection unit sets the position for detecting the in-focus position as the position included in the first area. An imaging device that detects a focal position .

The imaging device according to claim 1 or 2,
When the zoom lens stops, the detection unit sets the position for detecting the in-focus position to a position included in the second region, and detects the in-focus position .

The imaging device according to claim 1 or 2,
When the zoom lens is stopped, the detection unit detects the in-focus position that focuses on a subject close to the subject located at the position included in the second region before the zoom lens moves .

In the imaging device according to any one of claims 1 to 4,
The said detection part is an imaging device which detects the said focus position which focuses on the position contained in the said 1st area | region, when the position contained in the said 1st area | region is selected by the said selection part .

In the imaging device according to any one of claims 1 to 5,
The detection unit is configured to focus on an image plane position where the position of the image plane of the optical system is within a range that is three times the focal depth of the optical system at the position selected by the selection unit. An imaging device that detects

The imaging device according to any one of claims 1 to 6,
The detection unit focuses on the position of the image plane where the amount of deviation of the image plane of the optical system from the position selected by the selection unit falls within a range that is three times the focal depth of the optical system. An imaging device that detects a focal position.

The imaging device according to any one of claims 1 to 7,
The said detection part is an imaging device which detects the said focus position which focuses on the position of the optical axis of the said optical system in the image surface of the said optical system.

In the imaging device according to any one of claims 1 to 8,
The detection unit is an imaging apparatus that detects the in-focus position that focuses on a position included in the first region that is close to a position included in the second region selected by the selection unit.

The imaging device according to any one of claims 1 to 9,
The said detection part is an imaging device which detects the deviation | shift amount of the position of the said focus lens, and the said focus position.

In the imaging device according to any one of claims 1 to 10,
An imaging unit that captures an image by the optical system and outputs a signal;
The detection unit is an imaging device that detects a focus position where an image by the optical system is focused on the imaging unit based on a signal output from the imaging unit.

The imaging device according to any one of claims 1 to 11,
An imaging apparatus comprising: a control unit that controls a position of the focus lens at the in-focus position detected by the detection unit.

The imaging apparatus according to claim 12,
The controller is configured to control the position of the focus lens based on a positional relationship between the zoom lens and the focus lens when the focus position is not detected by the detection unit.

The imaging device according to claim 12 or 13,
The control unit is an imaging apparatus that controls the position of the focus lens based on a movement amount of the zoom lens when the focus position is not detected by the detection unit.